mirror of
https://github.com/qemu/qemu.git
synced 2024-11-24 11:23:43 +08:00
b8611499b9
Now that the cpu_ld/st_* function directly call helper_ret_ld/st, we can drop the old helper_ld/st functions. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20150710095656.13280.7085.stgit@PASHA-ISP> Signed-off-by: Richard Henderson <rth@twiddle.net>
442 lines
10 KiB
C
442 lines
10 KiB
C
/*
|
|
* Software MMU support
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Generate inline load/store functions for all MMU modes (typically
|
|
* at least _user and _kernel) as well as _data versions, for all data
|
|
* sizes.
|
|
*
|
|
* Used by target op helpers.
|
|
*
|
|
* The syntax for the accessors is:
|
|
*
|
|
* load: cpu_ld{sign}{size}_{mmusuffix}(env, ptr)
|
|
*
|
|
* store: cpu_st{sign}{size}_{mmusuffix}(env, ptr, val)
|
|
*
|
|
* sign is:
|
|
* (empty): for 32 and 64 bit sizes
|
|
* u : unsigned
|
|
* s : signed
|
|
*
|
|
* size is:
|
|
* b: 8 bits
|
|
* w: 16 bits
|
|
* l: 32 bits
|
|
* q: 64 bits
|
|
*
|
|
* mmusuffix is one of the generic suffixes "data" or "code", or
|
|
* (for softmmu configs) a target-specific MMU mode suffix as defined
|
|
* in target cpu.h.
|
|
*/
|
|
#ifndef CPU_LDST_H
|
|
#define CPU_LDST_H
|
|
|
|
#if defined(CONFIG_USER_ONLY)
|
|
/* All direct uses of g2h and h2g need to go away for usermode softmmu. */
|
|
#define g2h(x) ((void *)((unsigned long)(target_ulong)(x) + guest_base))
|
|
|
|
#if HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS
|
|
#define h2g_valid(x) 1
|
|
#else
|
|
#define h2g_valid(x) ({ \
|
|
unsigned long __guest = (unsigned long)(x) - guest_base; \
|
|
(__guest < (1ul << TARGET_VIRT_ADDR_SPACE_BITS)) && \
|
|
(!reserved_va || (__guest < reserved_va)); \
|
|
})
|
|
#endif
|
|
|
|
#define h2g_nocheck(x) ({ \
|
|
unsigned long __ret = (unsigned long)(x) - guest_base; \
|
|
(abi_ulong)__ret; \
|
|
})
|
|
|
|
#define h2g(x) ({ \
|
|
/* Check if given address fits target address space */ \
|
|
assert(h2g_valid(x)); \
|
|
h2g_nocheck(x); \
|
|
})
|
|
|
|
#endif
|
|
|
|
#if defined(CONFIG_USER_ONLY)
|
|
|
|
/* In user-only mode we provide only the _code and _data accessors. */
|
|
|
|
#define MEMSUFFIX _data
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_useronly_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_useronly_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_useronly_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_useronly_template.h"
|
|
#undef MEMSUFFIX
|
|
|
|
#define MEMSUFFIX _code
|
|
#define CODE_ACCESS
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_useronly_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_useronly_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_useronly_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_useronly_template.h"
|
|
#undef MEMSUFFIX
|
|
#undef CODE_ACCESS
|
|
|
|
#else
|
|
|
|
/* The memory helpers for tcg-generated code need tcg_target_long etc. */
|
|
#include "tcg.h"
|
|
|
|
#ifdef MMU_MODE0_SUFFIX
|
|
#define CPU_MMU_INDEX 0
|
|
#define MEMSUFFIX MMU_MODE0_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif
|
|
|
|
#if (NB_MMU_MODES >= 2) && defined(MMU_MODE1_SUFFIX)
|
|
#define CPU_MMU_INDEX 1
|
|
#define MEMSUFFIX MMU_MODE1_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif
|
|
|
|
#if (NB_MMU_MODES >= 3) && defined(MMU_MODE2_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 2
|
|
#define MEMSUFFIX MMU_MODE2_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 3) */
|
|
|
|
#if (NB_MMU_MODES >= 4) && defined(MMU_MODE3_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 3
|
|
#define MEMSUFFIX MMU_MODE3_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 4) */
|
|
|
|
#if (NB_MMU_MODES >= 5) && defined(MMU_MODE4_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 4
|
|
#define MEMSUFFIX MMU_MODE4_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 5) */
|
|
|
|
#if (NB_MMU_MODES >= 6) && defined(MMU_MODE5_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 5
|
|
#define MEMSUFFIX MMU_MODE5_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 6) */
|
|
|
|
#if (NB_MMU_MODES >= 7) && defined(MMU_MODE6_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 6
|
|
#define MEMSUFFIX MMU_MODE6_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 7) */
|
|
|
|
#if (NB_MMU_MODES >= 8) && defined(MMU_MODE7_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 7
|
|
#define MEMSUFFIX MMU_MODE7_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 8) */
|
|
|
|
#if (NB_MMU_MODES >= 9) && defined(MMU_MODE8_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 8
|
|
#define MEMSUFFIX MMU_MODE8_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 9) */
|
|
|
|
#if (NB_MMU_MODES >= 10) && defined(MMU_MODE9_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 9
|
|
#define MEMSUFFIX MMU_MODE9_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 10) */
|
|
|
|
#if (NB_MMU_MODES >= 11) && defined(MMU_MODE10_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 10
|
|
#define MEMSUFFIX MMU_MODE10_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 11) */
|
|
|
|
#if (NB_MMU_MODES >= 12) && defined(MMU_MODE11_SUFFIX)
|
|
|
|
#define CPU_MMU_INDEX 11
|
|
#define MEMSUFFIX MMU_MODE11_SUFFIX
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#endif /* (NB_MMU_MODES >= 12) */
|
|
|
|
#if (NB_MMU_MODES > 12)
|
|
#error "NB_MMU_MODES > 12 is not supported for now"
|
|
#endif /* (NB_MMU_MODES > 12) */
|
|
|
|
/* these access are slower, they must be as rare as possible */
|
|
#define CPU_MMU_INDEX (cpu_mmu_index(env, false))
|
|
#define MEMSUFFIX _data
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
|
|
#define CPU_MMU_INDEX (cpu_mmu_index(env, true))
|
|
#define MEMSUFFIX _code
|
|
#define SOFTMMU_CODE_ACCESS
|
|
|
|
#define DATA_SIZE 1
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 2
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 4
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#define DATA_SIZE 8
|
|
#include "exec/cpu_ldst_template.h"
|
|
|
|
#undef CPU_MMU_INDEX
|
|
#undef MEMSUFFIX
|
|
#undef SOFTMMU_CODE_ACCESS
|
|
|
|
#endif /* defined(CONFIG_USER_ONLY) */
|
|
|
|
/**
|
|
* tlb_vaddr_to_host:
|
|
* @env: CPUArchState
|
|
* @addr: guest virtual address to look up
|
|
* @access_type: 0 for read, 1 for write, 2 for execute
|
|
* @mmu_idx: MMU index to use for lookup
|
|
*
|
|
* Look up the specified guest virtual index in the TCG softmmu TLB.
|
|
* If the TLB contains a host virtual address suitable for direct RAM
|
|
* access, then return it. Otherwise (TLB miss, TLB entry is for an
|
|
* I/O access, etc) return NULL.
|
|
*
|
|
* This is the equivalent of the initial fast-path code used by
|
|
* TCG backends for guest load and store accesses.
|
|
*/
|
|
static inline void *tlb_vaddr_to_host(CPUArchState *env, target_ulong addr,
|
|
int access_type, int mmu_idx)
|
|
{
|
|
#if defined(CONFIG_USER_ONLY)
|
|
return g2h(vaddr);
|
|
#else
|
|
int index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
|
|
CPUTLBEntry *tlbentry = &env->tlb_table[mmu_idx][index];
|
|
target_ulong tlb_addr;
|
|
uintptr_t haddr;
|
|
|
|
switch (access_type) {
|
|
case 0:
|
|
tlb_addr = tlbentry->addr_read;
|
|
break;
|
|
case 1:
|
|
tlb_addr = tlbentry->addr_write;
|
|
break;
|
|
case 2:
|
|
tlb_addr = tlbentry->addr_code;
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
if ((addr & TARGET_PAGE_MASK)
|
|
!= (tlb_addr & (TARGET_PAGE_MASK | TLB_INVALID_MASK))) {
|
|
/* TLB entry is for a different page */
|
|
return NULL;
|
|
}
|
|
|
|
if (tlb_addr & ~TARGET_PAGE_MASK) {
|
|
/* IO access */
|
|
return NULL;
|
|
}
|
|
|
|
haddr = addr + env->tlb_table[mmu_idx][index].addend;
|
|
return (void *)haddr;
|
|
#endif /* defined(CONFIG_USER_ONLY) */
|
|
}
|
|
|
|
#endif /* CPU_LDST_H */
|